
where \(g_p\)  and \(g_v\)  are universal baryon-pseudoscalar-meson and baryon-vector-meson coupling constants, and a,b,c, and d are constants.
In the SU(4) quark model, baryons belong to the 20-plet states [1]}. These states can be conveniently expressed by
tensors \(\phi _{\mu \nu \lambda }\) , where \(\mu ,\nu , \)  and \(\lambda \)  run from 1 to 4, that satisfy the conditions
\(\phi _{\mu \nu \lambda }+\phi _{\nu \lambda \mu }+\phi _{\lambda \mu \nu }=0,~~\phi _{\mu \nu \lambda }=\phi _{\nu \mu \lambda },\) 
